Airworthiness directives › 2021-17-17
AD 2021-17-17 Airworthiness Directives; Airworthiness Directives; Airbus Helicopters and Airbus Helicopters Deutschland GmbH (AHD) Helicopters
Models named: AS350B3, EC135P3, EC135T3, MBB-BK117 C-2. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to the following helicopters, certificated in any category, with an affected part as defined in European Union Aviation Safety Agency (EASA) AD 2020-0064, dated March 19, 2020 (EASA AD 2020-0064), installed: (1) Airbus Helicopters Model AS332C, AS332C1, AS332L, AS332L1, AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350D, AS355E, AS355F, AS355F1, AS355F2, AS355N, AS355NP, AS-365N2, AS 365 N3, EC120B, EC130B4, EC130T2, EC 155B, EC155B1, SA-365N, and SA-365N1 helicopters, and Note 1 to paragraph (c)(1): Helicopters with an AS350B3e designation are Model AS350B3 helicopters. (2) Airbus Helicopters Deutschland GmbH (AHD) Model EC135P1, EC135P2, EC135P2+, EC135P3, EC135T1, EC135T2, EC135T2+, EC135T3, MBB-BK117 C-2, and MBB-BK117 D-2 helicopters. Note 2 to paragraph (c)(2): Helicopters with an EC135P3H designation are Model EC135P3 helicopters. Helicopters with an EC135T3H designation are Model EC135T3 helicopters. Helicopters with an MBB-BK117 C-2e designation are Model MBB-BK117 C-2 helicopters.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Except as specified in paragraph (h) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, EASA AD 2020-0064.
Unsafe condition
This AD was prompted by failure of an Emergency Flotation System (EFS) float compartment to inflate during maintenance of the EFS. The FAA is issuing this AD to address a blocked float supply hose. The unsafe condition, if not addressed, could result in partial inflation of an EFS float during an emergency landing on water and subsequently preventing a timely egress from the helicopter, which could result in injury to helicopter occupants.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1